Harman Stove Company TLC 2000 Installation & Operating Manual

Also see for TLC 2000 Stove: Operator's manual

Contents

Harman Stove Company TLC 2000 Installation & Operating Manual Manual pdf 17 page image

TLC 2000 Coal Stove 17The Chimney SystemSoot and Creosote - Formation and Need for RemovalWhen wood is burned slowly, it produces tar and other organicvapors, which combine with expelled moisture to form sootor creosote. The soot and creosote vapors condense in therelatively cool chimney flue of a slow burning fire. As a result,soot or creosote residue accumulates on the flue lining. Whenignited, this soot or creosote can result in an extremely hot fire.The chimney connector and chimney should be inspectedat least once every two months during the heating season todetermine if a soot or creosote build-up has occurred. If sootor creosote has accumulated (3 mm or more) it should beremoved to reduce the risk of a chimney fire.Checking your chimney and chimney connector more fre-quently, especially while you are getting used to your stove,is recommended. To inspect this system, let the stove cool.Using a flashlight and mirror, check the interior of the chimneyconnector, and the chimney itself.To clean deposits from the surface of the connector, use astiff wire brush after dismantling the connector assembly. Toclean the chimney, use a specially designed brush sized to fityour particular flue opening, or call an established chimneycleaning service.At the end of the heating season, perform a thorough examina-tion of your chimney system, and have it repaired if necessary.DraftDraft is widely misunderstood. It is important that you,the stove operator, realize that draft is a variable effect, nota given quantity. Stoves and chimneys do not have draft, yetdraft is the key to your stove’s performance.Draft is a force, produced by an operating stove and thechimney to which it is attached. It is created by hot gases risingup the chimney, creating a pressure difference between theinside of your home and the outside air. It continually movesfresh combustion air into the stove, and hot exhaust gases outof the stove; without this constant flow, the fire will go out.Other factors, such as barometric pressure, winds, theairtightness of the home, the total inside chimney volume,chimney height and the presence of venting devices suchas exhaust fans also play a role in maintaining an adequatedraft. In some cases, a window may need to be left open, orsome other source of fresh air provided, to keep the appli-ance operating properly. Low barometric pressures, superinsulated homes and exhaust fans can reduce draft; winds canplay havoc with draft; and too large or too small a chimneyvolume can cause reduced draft due to the excessive coolingor not enough room to vent exhaust gases quickly.Some signs of inadequate draft are smoking, odor, diffi-culty in maintaining the fire, and low heat output. Overdraftcan be caused by a very tall chimney even if it is the recom-mended size, and can cause overfiring of your stove. Signsof an overdraft include rapid fuel consumption, inability toslow the fire, and parts of the stove or chimney connectorglowing red. It is important that you follow the chimneyguidelines in this manual, including size, type, and height toavoid draft problems.When installed and operated according to this manual, theTLC 2000 will produce enough hot gases to keep the chimneywarm so that adequate draft is maintained throughout theburn cycle.Chimney ConnectorsIn general, following these guidelines will ensure compli-ance with all national and provincial codes; prior to beginningyour installation, check with your local building code officialto check on additional local regulations which may influencethe design and placement of your venting system.The Harman TLC 2000 may be installed with (150 mm) 24gauge chimney connector pipe. Size of the connector shouldcorrespond to the size of the flue collar opening. Do not usemakeshift compromises. No part of the chimney connectormay pass through an attic or roof space, closet or otherconcealed space, or through a floor or ceiling. Wheneverpossible, avoid passing the connector through a combustiblewall; if you must, use an approved wall pass-through, de-scribed later in this section.Assemble the connector beginning at the flue collar, withthe crimped ends pointing towards the stove (to keep debrisand creosote flakes inside the system). Each joint, includingthe one to the stove’s flue collar and the one to the chimneyitself should be secured with at least three sheet metal screws.Screws may be a maximum of 3 inches apart. A 1-1/4" (30mm) overlap is required at each joint, including the flue col-lar attachment. No more than two 90 degree elbows shouldbe used, and the total length of connector should not exceed10 feet (3 m). All horizontal runs of connector must have aminimum upward slope of 1/4"(6 mm) per foot (20 mm permeter).Wall Pass-throughsOccasionally it is necessary to pass the chimney connectorthrough a combustible wall to reach the chimney. Dependingon your local building codes, and the pertinent provincial ornational codes, there are several choices for accomplishingthis safely. Before beginning your installation, contact localofficials, and also the chimney connector and chimney manu-facturer for specific requirements.Canada. Three methods are approved by the CanadianStandards Association. The diagram shows one method re-quiring an 18"(450 mm) air space between the connector andthe wall. It allows use of one or two covers as described inthe diagram. The two other methods are described in detail inthe current issue of CAN/CSA B365, the national standard.United States In the U.S., the national code is NFPA 211.While many localities adopt this standard, be sure to checkwith local authorities before beginning your installation.